UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 37635

12.2 - NGDBUILD:931 SIM_DEVICE has been changed to correct post ngdbuild and timing simulation for this primitive

Description


When using the Spartan 6 PLL_BASE I am receiving the following warning in NGDBUILD:


WARNING:NGDBUILD:931 - The value of SIM_DEVICE on instance 'a' of type pll_adv has been changed from 'Virtex 5' to 'Spartan 6' to correct post-ngdbuild and timing simulation for this primitive.
In order for functional simulation to be correct, the value of SIM_DEVICE should be changed in this same manner in the source netlist or constraint file.



Why is this warning issued, when I am using a PLL_BASE and there is no sim_device attribute?

Solution

This warning can be ignored as the PLL_BASE functionality in simulation is the same for Virtex 5 and Spartan 6.

The SIM_DEVICE only affects the DRP behavior.
AR# 37635
Date Created 08/24/2010
Last Updated 09/25/2014
Status Active
Type Known Issues